2140449 has 16 divisors (see below), whose sum is σ = 3028992. Its totient is φ = 1341648.

The previous prime is 2140447. The next prime is 2140459. The reversal of 2140449 is 9440412.

It is not a de Polignac number, because 2140449 - 2¹ = 2140447 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (2140441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4392 + ... + 4854.

It is an arithmetic number, because the mean of its divisors is an integer number (189312).

2^2140449 is an apocalyptic number.

It is an amenable number.

2140449 is a deficient number, since it is larger than the sum of its proper divisors (888543).

2140449 is a wasteful number, since it uses less digits than its factorization.

2140449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 2140449 is about 1463.0273408245. The cubic root of 2140449 is about 128.8748862061.

It can be divided in two parts, 21 and 40449, that added together give a triangular number (40470 = T₂₈₄).

The spelling of 2140449 in words is "two million, one hundred forty thousand, four hundred forty-nine".